diff --git a/.babelrc b/.babelrc
index a5317cdc5..067335f61 100644
--- a/.babelrc
+++ b/.babelrc
@@ -5,9 +5,8 @@
       {
         "targets": {
           "browsers": [
-            ">0.25%",
-            "not ie 11",
-            "not op_mini all"
+            "chrome >= 58",
+            "firefox >= 53"
           ]
         }
       }
@@ -16,7 +15,6 @@
   ],
   "plugins": [
     "transform-runtime",
-    "transform-async-to-generator",
     "transform-class-properties",
     "transform-object-rest-spread"
   ]
diff --git a/package-lock.json b/package-lock.json
index 5baf8b901..d36ba88a4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -35501,14 +35501,14 @@
       }
     },
     "gulp-uglify-es": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/gulp-uglify-es/-/gulp-uglify-es-1.0.1.tgz",
-      "integrity": "sha512-lwVTOhSPNJvoPZ8wC1mrDiqSszS8INK2R4kaslBKf9wyMVXLWckKs+LRh5bgcymeB5zsczGKT9bGCTNKeEoCvQ==",
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/gulp-uglify-es/-/gulp-uglify-es-1.0.4.tgz",
+      "integrity": "sha512-UMRufZsBmQizCYpftutaiVoLswpbzFEfY90EJLU4YlTgculeHnanb794s88TMd5tpCZVC638sAX6JrLVYTP/Wg==",
       "dev": true,
       "requires": {
         "o-stream": "^0.2.2",
         "plugin-error": "^1.0.1",
-        "uglify-es": "^3.3.9",
+        "terser": "^3.7.5",
         "vinyl": "^2.1.0",
         "vinyl-sourcemaps-apply": "^0.2.1"
       },
@@ -35520,9 +35520,9 @@
           "dev": true
         },
         "commander": {
-          "version": "2.13.0",
-          "resolved": "https://registry.npmjs.org/commander/-/commander-2.13.0.tgz",
-          "integrity": "sha512-MVuS359B+YzaWqjCL/c+22gfryv+mCBPHAv3zyVI2GN8EY6IRP8VwtasXn8jyyhvvq84R4ImN1OKRtcbIasjYA==",
+          "version": "2.20.0",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
+          "integrity": "sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==",
           "dev": true
         },
         "extend-shallow": {
@@ -35562,14 +35562,25 @@
           "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
           "dev": true
         },
-        "uglify-es": {
-          "version": "3.3.9",
-          "resolved": "https://registry.npmjs.org/uglify-es/-/uglify-es-3.3.9.tgz",
-          "integrity": "sha512-r+MU0rfv4L/0eeW3xZrd16t4NZfK8Ld4SWVglYBb7ez5uXFWHuVRs6xCTrf1yirs9a4j4Y27nn7SRfO6v67XsQ==",
+        "source-map-support": {
+          "version": "0.5.12",
+          "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.12.tgz",
+          "integrity": "sha512-4h2Pbvyy15EE02G+JOZpUCmqWJuqrs+sEkzewTm++BPi7Hvn/HwcqLAcNxYAyI0x13CpPPn+kMjl+hplXMHITQ==",
           "dev": true,
           "requires": {
-            "commander": "~2.13.0",
-            "source-map": "~0.6.1"
+            "buffer-from": "^1.0.0",
+            "source-map": "^0.6.0"
+          }
+        },
+        "terser": {
+          "version": "3.17.0",
+          "resolved": "https://registry.npmjs.org/terser/-/terser-3.17.0.tgz",
+          "integrity": "sha512-/FQzzPJmCpjAH9Xvk2paiWrFq+5M6aVOf+2KRbwhByISDX/EujxsK+BAvrhb6H+2rtrLCHK9N01wO014vrIwVQ==",
+          "dev": true,
+          "requires": {
+            "commander": "^2.19.0",
+            "source-map": "~0.6.1",
+            "source-map-support": "~0.5.10"
           }
         }
       }
diff --git a/package.json b/package.json
index 359f0001b..0cbd873e1 100644
--- a/package.json
+++ b/package.json
@@ -175,7 +175,6 @@
     "addons-linter": "^1.10.0",
     "babel-core": "^6.26.3",
     "babel-eslint": "^8.0.0",
-    "babel-plugin-transform-async-to-generator": "^6.24.1",
     "babel-plugin-transform-class-properties": "^6.24.1",
     "babel-plugin-transform-object-rest-spread": "^6.22.0",
     "babel-plugin-transform-runtime": "^6.23.0",
@@ -223,7 +222,7 @@
     "gulp-sourcemaps": "^2.6.0",
     "gulp-stylefmt": "^1.1.0",
     "gulp-stylelint": "^7.0.0",
-    "gulp-uglify-es": "^1.0.1",
+    "gulp-uglify-es": "^1.0.4",
     "gulp-util": "^3.0.7",
     "gulp-watch": "^5.0.1",
     "gulp-zip": "^4.0.0",